Can I plant this deeper than current soil level?
This plant has been in the pot too long. Since it is putting out roots much further up the stem, is it okay to plant it deeper than the current soil level?
Certified GKH Gardening Expert
This appears to be a Cordyline. I would not replant deeper into the soil This will cause more problems than it is worth. They will do this in very humid environments, and will often lose the adventitious roots once the humidity breaks. These can grow quite tall, and will only, usually, have growth on the top.
Here is an article that will help with general Cordyline care, though the cultivar that you have is a little more cold tolerant: https://www.gardeningknowhow.com/houseplants/ti-plant/growing-ti-plants-outdoors.htm